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Gamophyceae: Zygnematales: Zygnemataceae

 Spirogyra tumida
Jao

Spirogyra Genus:
Species: Vegetative cells 85-175 μm long, 16-19 μm diam.; 1 chloroplast making 3-9 turns in each cell; conjugation scalariform, zygospores ellipsoidal (48-86 μm long, 25-35 μm wide) (Illustrations of The Japanese Fresh-water Algae, 1977).

Spirogyra tumida Jao, cell body μm long, 20 μm wide, septum folded, 1 band-form chloroplast making more than 6 turns in each cell, x 640, O-ike waterside park, Kasukabe city, Saitama Pref., Japan, February 15, 2004 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Spirogyra Spirogyra Spirogyra Spirogyra

Spirogyra tumida Jao, cell body μm long, 18 μm wide, septum folded, 1 band-form chloroplast making 5.5 turns in each cell, x 640, O-ike waterside park, Kasukabe city, Saitama Pref., Japan, February 15, 2004 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Spirogyra Spirogyra

Spirogyra tenuissima (Hassall) Kützing: Vegetative cells 66-198 μm long, 10-14 μm diam., 1 chloroplast making 3.5-6 tuns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

* Spiryogyra arta Jao: Vegetative cells 165-225 μm long, 15-17 μm diam., 1 chloroplast making 4-7 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spiryogyra tumida Jao: Vegetative cells 85-175 μm long, 16-19 μm diam., 1 chloroplast making 3-9 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

Spiryogyra inflata (Vaucher) Kützing: Vegetative cells 85-160 μm long, 19-20 μm diam., 1 chloroplast making 2.5-4.5 turns in each cell (Illustrations of The Japanese Fresh-water Algae, 1977).

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